Post Gems cache remains running indefinitely, does not respect timeout-minutes

Steps to reproduce

1. Add deploy step to Ruby project that uses actions/cache:

      - name: Gem cache
        id: gem-cache
        timeout-minutes: 15
        uses: actions/cache@v1.0.3
        with:
          path: vendor/bundle
          key: ${{ runner.os }}-gem-${{ hashFiles('**/Gemfile.lock') }}
          restore_keys: |
            ${{ runner.os }}-gem-

1. Add deploy step that triggers GAE deploy, e.g. using actions-hub/gcloud@273.0.0

What happens

1. Post Gem cache step remains running indefinitely even after all other steps finish successfully, e.g. more than an hour:

1. timeout-minutes of the step is not respected

What should happen

1. No error should happen
2. If task hangs, timeout-minutes should be respected

[joshmgross]

👋 hashFiles has been updated on the runner to correctly handle symlink loops (see actions/runner#234).

@ain do you still see this issue?

[ain]

UPDATE: issue occured over a background process following Gem cache step.

When the process got killed, Post Gem cache succeeded.